Authentication

Most of the endpoints in the Packet API require authentication. Authenticating
is done with an authentication token in the X-Auth-Token header.

curl -H 'X-Auth-Token: my_authentication_token'

Authentication tokens are used to identify the user your application is
connecting to the Packet API on behalf of. Think of authentication tokens as
permanent sessions—the user creates authentication tokens, and your app
can use them to connect to the Packet API on their behalf until they delete the
token.